src/ppapi/proxy/video_destination_resource.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ppapi/proxy/video_destination_resource.h"
   6
   7 #include "base/bind.h"
   8 #include "ipc/ipc_message.h"
   9 #include "ppapi/c/pp_errors.h"
  10 #include "ppapi/c/private/pp_video_frame_private.h"
  11 #include "ppapi/proxy/ppapi_messages.h"
  12 #include "ppapi/shared_impl/ppapi_globals.h"
  13 #include "ppapi/shared_impl/resource_tracker.h"
  14 #include "ppapi/shared_impl/var.h"
  15 #include "ppapi/thunk/enter.h"
  16 #include "ppapi/thunk/ppb_image_data_api.h"
  17
  18 using ppapi::thunk::EnterResourceNoLock;
  19 using ppapi::thunk::PPB_VideoDestination_Private_API;
  20
  21 namespace ppapi {
  22 namespace proxy {
  23
  24 VideoDestinationResource::VideoDestinationResource(
  25     Connection connection,
  26     PP_Instance instance)
  27     : PluginResource(connection, instance),
  28       is_open_(false) {
  29   SendCreate(RENDERER, PpapiHostMsg_VideoDestination_Create());
  30 }
  31
  32 VideoDestinationResource::~VideoDestinationResource() {
  33 }
  34
  35 PPB_VideoDestination_Private_API*
  36     VideoDestinationResource::AsPPB_VideoDestination_Private_API() {
  37   return this;
  38 }
  39
  40 int32_t VideoDestinationResource::Open(
  41     const PP_Var& stream_url,
  42     scoped_refptr<TrackedCallback> callback) {
  43   if (TrackedCallback::IsPending(open_callback_))
  44     return PP_ERROR_INPROGRESS;
  45
  46   open_callback_ = callback;
  47
  48   scoped_refptr<StringVar> stream_url_var = StringVar::FromPPVar(stream_url);
  49   const uint32_t kMaxStreamIdSizeInBytes = 16384;
  50   if (!stream_url_var.get() ||
  51       stream_url_var->value().size() > kMaxStreamIdSizeInBytes)
  52     return PP_ERROR_BADARGUMENT;
  53   Call<PpapiPluginMsg_VideoDestination_OpenReply>(RENDERER,
  54       PpapiHostMsg_VideoDestination_Open(stream_url_var->value()),
  55       base::Bind(&VideoDestinationResource::OnPluginMsgOpenComplete, this));
  56   return PP_OK_COMPLETIONPENDING;
  57 }
  58
  59 int32_t VideoDestinationResource::PutFrame(
  60     const PP_VideoFrame_Private& frame) {
  61   if (!is_open_)
  62     return PP_ERROR_FAILED;
  63
  64   thunk::EnterResourceNoLock<thunk::PPB_ImageData_API> enter_image(
  65       frame.image_data, true);
  66   if (enter_image.failed())
  67     return PP_ERROR_BADRESOURCE;
  68
  69   // Check that the PP_Instance matches.
  70   Resource* image_object =
  71       PpapiGlobals::Get()->GetResourceTracker()->GetResource(frame.image_data);
  72   if (!image_object || pp_instance() != image_object->pp_instance()) {
  73     Log(PP_LOGLEVEL_ERROR,
  74         "VideoDestinationPrivateResource.PutFrame: Bad image resource.");
  75     return PP_ERROR_BADRESOURCE;
  76   }
  77
  78   Post(RENDERER,
  79        PpapiHostMsg_VideoDestination_PutFrame(image_object->host_resource(),
  80                                               frame.timestamp));
  81   return PP_OK;
  82 }
  83
  84 void VideoDestinationResource::Close() {
  85   Post(RENDERER, PpapiHostMsg_VideoDestination_Close());
  86
  87   if (TrackedCallback::IsPending(open_callback_))
  88     open_callback_->PostAbort();
  89 }
  90
  91 void VideoDestinationResource::OnPluginMsgOpenComplete(
  92     const ResourceMessageReplyParams& params) {
  93   if (TrackedCallback::IsPending(open_callback_)) {
  94     int32_t result = params.result();
  95     if (result == PP_OK)
  96       is_open_ = true;
  97     open_callback_->Run(result);
  98   }
  99 }
 100
 101 }  // namespace proxy
 102 }  // namespace ppapi